Ray Bryant

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The Linux® kernel is unique in that it supports a wide variety of high-quality filesystems. For server systems, the most commonly used are Ext2, Ext3, ReiserFS, XFS and JFS. This paper compares the performance of these filesystems using Linux 2.4.17 and three benchmarks: pgmeter, an open source implementation of the Intel® Iometer benchmark; filemark (a(More)
PenguinoMeter is a new open-source benchmark for Linux that measures file-system data transfer rates. PenguinoMeter allows the user to specify the file-system workload to be used in the benchmark in a very flexible manner. The workload specification is patterned after that of the Intel® Iometer benchmark; the current version of PenguinoMeter can read(More)
Introduction Just as other authors have compared the function available in Linux 2.4 to that available in Linux 2.2 (see, for example, [Linux 2.4]), the purpose of this paper is to compare the performance likely to be available in Linux 2.4 to the performance delivered by Linux 2.2. We make this estimate by comparing the performance of Linux 2.3.99 kernels(More)
Rainfall is a driving force for the transport of environmental contaminants from agricultural soils to surficial water bodies via surface runoff. The objective of this study was to characterize the effects of antecedent soil moisture content on the fate and transport of surface applied commercial urea, a common form of nitrogen (N) fertilizer, following a(More)
Chip and system designers are battling a two front war -- extracting the last advantages from traditional semiconductor technology scaling on one front, while simultaneously working to contain skyrocketing chip power budgets on the other front. The impacts of this struggle are being felt across market segments far beyond the historic "low power" drivers in(More)
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